how many volts does this run on at top speed?

Thank you very much for your feedback and reminders. the voltage should reach 12.6V and the current should reach 38A if it run on at top speed.

I'm having trouble programming the skywalker 40a esc that comes with this edf kit using beeps. do you recommend a particular led programming card?

Thank you for your question. Almost no programming cards are seen on the market, This can only be done with a remote control. We don't do control programs, so there is no better suggestion for this problem. I am really sorry that I have not helped you with the question.

the picture shows and the heaed states 4300kv 4s but the choice are 3900kv 4s or 4900kv 3s? so is it 4300 or 3900 for the 4s?

Thank you very much for your feedback and reminders. This is the size of：Powerfun 50mm EDF with 4300KV 4S Motor +ESC40A(2~4S). This is a very favorable EDF package and high-qulity products. I am very sorry for the inconvenience caused by our mistakes. I wish you a happy life.

what connector does it have when i straight of buy it, an xt60?, xt30?

Thank you for your trust and support , this is 40A(2~4S)ESC，The default plug is T plug. If you need XT60 plug, please send us an email to let us know and we will order it for you. Thank you!

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🚀 Elevate Your Flight Experience!

HEAT RESISTANCE - Engineered with pure copper wire for superior heat dissipation.
SMOOTH OPERATION - Dynamic balance tested for seamless flight and stability.
UNLEASH THE POWER - Experience a max thrust of 770g for unparalleled performance.
DURABILITY MEETS DESIGN - Crafted from high-quality materials for long-lasting use.
VERSATILE COMPATIBILITY - Removable guide ring adapts to various RC models effortlessly.

The Powerfun EDF 50mm Ducted Fan is a high-performance component designed for RC jet enthusiasts. Featuring a powerful 4900KV brushless motor, it delivers a maximum thrust of 770g while maintaining a lightweight design at just 75g. With dynamic balance testing, this fan ensures smooth operation and stability, making it an ideal choice for enhancing your RC airplane's efficiency. Built with durable materials and advanced heat resistance technology, the Powerfun EDF is engineered for longevity and reliability.

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